PRI NM-1CE1T1-PRI to BRI conection

[ahmedk2000]

Currently I have a 3 remote sites connected to a main one as a backup to a leased line.I have baught a cisco router 2811 with an ISDN card NM-1CE1T1_PRI. the 3 remote sites are connected to the main one at 128k and ,i would like to upgrade them to 256k for each site. I have ordered an extra ISDN line. I need to know how i am going to reconfigure the link to take 256k for each site using PRI to BRI connection. I have attached the current 3 config for the remote sites and the current config for the main site

[irisrios]

Using Dialer profiles could be a best option.Each dialer interface uses a dialer pool, which is a pool of physical interfaces (ISDN BRI and PRI, asynchronous-modem, and synchronous serial). Refer URL for more information

http://www.cisco.com/en/US/tech/tk801/tk133/tk159/tsd_technology_support_sub-protocol_home.html